[PATCH] ipx: call ipxitf_put() in ioctl error path

[Dan Carpenter]

We should call ipxitf_put() if the copy_to_user() fails.

Reported-by: 李强 <liqiang...@360.cn>
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 8a9219ff2e77..fa31ef29e3fa 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1168,11 +1168,10 @@ static int ipxitf_ioctl(unsigned int cmd, void __user 
*arg)
                sipx->sipx_network      = ipxif->if_netnum;
                memcpy(sipx->sipx_node, ipxif->if_node,
                        sizeof(sipx->sipx_node));
-               rc = -EFAULT;
+               rc = 0;
                if (copy_to_user(arg, &ifr, sizeof(ifr)))
-                       break;
+                       rc = -EFAULT;
                ipxitf_put(ipxif);
-               rc = 0;
                break;
        }
        case SIOCAIPXITFCRT: